温度压力是影响爆炸极限的因素，当温度和压力增加时爆炸下限会（） ["降低","不变","增大"]
Which Coherence caching pattern matches the sequence of events ？（） 1. Data is requested from cache 2. The requested data does not exist in the cache （cache miss） 3. The Coherence cache store is used to red data from the back-end persistent data source， and placed in ther cache 4. Data requested from the cache is returned to the caller [" read through"," write through"," refresh ahead"," write behind"]
电压互感器二次回路三相失压，必须停用（）。 ["高频保护","距离保护","低压闭锁过电流保护"]
简述轴与孔的热胀配合法。
Which three statements describe the functionality of the DO_KEY built-in?（） ["It accepts both a built-in and a key name as argument. ","If no key trigger is defined, the specified built-in executes. ","Its parameter must be specified in upper case, enclosed in single quotation marks. ","It performs the same task as if you pressed the function key associated with the specified argument. ","It executes the key trigger that corresponds to the built-in specified as its parameter.&e"]
什么是复原重置成本？什么是更新重置成本？
